重庆某发电厂灰渣中微量元素分布特征研究  

Study on the Trace Elements in Coal Ash and Cinder of an Power Plant in Chongqing

作　　者：洪全[1] 

机构地区：[1]重庆师范学院化学系,重庆400047

出　　处：《重庆环境科学》2003年第7期37-38,58,共3页Chongqing Environmental Science

摘　　要：本文以某电厂的锅炉灰渣(飞灰和底灰)为研究对象,分析了24个飞灰和24个底灰样品中Hg,As,Se,Pb,Cd,Zn,Ba,Co,Cr,Cu,Li,Ni,V,Zr等微量元素的含量水平和分布规律,结果表明:飞灰中As、Pb、Zn、Ba、Cu、V、Zr和Li的含量大于10ppm,Hg和Cd含量在1ppm以下;与原煤相比,14种元素在飞灰中的含量更高。其中Hg、As、Cu、Ni、Cr、Co、Cd、Zn和V等元素的含量分别是原煤的2倍以上;除As和Se外,其余元素在底灰中的含量高于原煤。This paper reported some primary results of trace elements in 24 coal ash samples and 24 coal cinder samples obtained from one pwoer plant in Chongqing. The results indicated that:in coal ash. the concentration of As,Pb, Zn,Ba,Cu,V,Zr and Li is higher than 10ppm,Hg,Se,Co,Cr and Ni between 1 and 10 ppm, only Cd lower than 1 ppm. In coal cinder,the concentration of Pb,Zn,Ba,Cu, V,Zr and Li is higher than lOppm, As, Se, Co, Cr and Ni between 1 and 10 ppm,Hg and Cd lower than 1 ppm. Compared with the coal used by the power plant, the concentration of all the trace elements measured in this paper is higher, while in the coal cinder, except As and Se, the concentration of the other elements is also higher.

关 键 词：煤 飞灰 底灰 微量元素 重庆 

分 类 号：X83[环境科学与工程—环境工程]